Patent classifications
B
PERFORMING OPERATIONS; TRANSPORTING
Load children
B60
VEHICLES IN GENERAL
Load children
B60B
VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
Load children
19/00
Wheels not otherwise provided for or having characteristics specified in one of the subgroups of this group
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B60B19/125
with helical projections on radial outer surface translating rotation of wheel into movement along the direction of the wheel axle
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